div.wf_panel {
  position: absolute;
  right: 0;
}
div.wf_panel > p {
  margin: 5px 0;
}
div.wf_panel > p > button {
  padding: 0 10px;
}
div.wf_panel > p > input {
  width: 50px;
}
div.wf_panel > p > *:not(:last-child) {
  margin-right: 10px;
}
div.wf_hide {
  opacity: 0.3;
}